Rubber tire



J. TODD.

RUBBER TIRE.

APPucAHoN FILED FEB. 8.' 19u.

Patented Aug. 8, 1922..

INVENTOR WITNESSES Pennsylvania, have invented a uTTTTun sTaTes PATENT oTTTca;

JAMESTODD, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 THE STERLING VAR- NISH COMPANY, 0F PITTSBURGH, PENNSYLVANIA, CORPORATION OF PENNSYL- VANIA.

RUBBER TIRE.

Specification of Letters Patent. l

Patented Aug. 8, 1922.

Application filed February 8, 1917. Serial No. 147,378.-

To aJZZ whom t may concer/n.:

Beit known that I, JAMES TODD, `a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State lof ful Improvement in Rubber Tires, of which the followinr is a full, clear, and exact description, re erence being had to the accompanying drawings, forming part of this specification, which illustrates a cross section of an automobile tire embodying the invention.v

The object of thel invention is to protect the rubber of a tire, such,'for example, as an automobile tire, during the period between the time of its manufact re and its actual use on an automobile. rth this object in view, the invention consists in a method and article, such as hereinafter described and particularly pointed out in the claims.

Referring to the illustrated embodiment of the invention, the rubber tire 1 has applied to it, coating 2 of a material which excludes the air, light and water from the rubber. The

inner surface of the tire is generally so wellprotected by the fibre or cloth lining and by chalk that it is preferred to apply the coating to the outer surface only, although I do not intend to so" limit my invention, as it might, under some circumstances, be desirable to coat the inner surface in addition to the outer surface. The preferred method is to apply directly to the newly manufactured tire a paint or varnish made of asphalt and petroleuml benzine. The 'benzine acts as a solvent for the` asphalt base and has little, if any, effect on the rubber, as it evaporates quickly and after having evaporated, leaves a coating of asphalt which keeps out the water, light and air. This asphalt is black, and therefore, is a good light-excluding material. After the tire is put into service, the coating, of course, wears 0E, it having served its purpose of protecting the rubber during the period ofstorage after manufacture and before the tire is put into service.

The foregoing method is found to preservel the rubber and to prevent or greatly retard the deterioration of therubber which new and use= asphalt and petroleum benzine,

after manufacture, a surface.

usually takes place -if the tire is stored for any length of time between manufacture and use.

y A tire with-the coatin'gof black varnish above described may be carried on an automobile without the necessity of putting on the ordinary tire covers,

upon the tire. Moreover, the coating presents a neat appearance which is desirable in case the tire is carried on the automobile.

While it is preferred to use a varnish of it is to be understood that other good quick drying black varnishes may be used. The invention is not limited to its. preferred embodiment, but may be employed in other methods and constructions within the scope of the following claims.

I claim:

1.- As' a new article of manufacture, a pneumatic tire casin having on its outer surface a black varnis impervious to light, water and air, ^deposite' on said surface from -a quick drying solution in a volatile solvent which does not materially injure-the rubber, substantially as described.

2. As a new article of manufacture, a pneumatic tire casing -having on its outer surface ablack asphalt varnish coating substantially impervious to light, deposited on said surface from a solution containing petroleum benzene, substantially as described. v

3. The process of preserving rubber pneumatic tire casings, which consists in applying directly to the outer surface of the tire casing an opaque Waterand air-proof quick drying black varnish containing a volatile solvent which will evaporate quickly without materially injuring the rubber, allowing the solvent to evaporate and leave deposited on said surface a coating which is substantially impervious to light, water and 4air and thereby protecting the rubber against deterioration, substantially as described.

4. The process of preserving rubber pneumatie tire casings, which consists in applying directly to the outer surface of the tire casing an opaque waterand air-proof quick since the coating `prevents the action of light, water and air coating substantially water and air,

drying asphalt varnish containing petroprotecting the rubber against deterioration,

leum benzene, which serves as a solvent for substantially as described. Y 10 the asphalt when applied and quickly evapo- Intestimony whereof, I have hereunto set rates without materially injuring the rubmy hand.

5 ber, allowing the petroleum benzene to JAMES' TODD.

evaporate' and leave deposited lon said sur- Witnesses: y y face a coating which is substantially imper- GEO. H. PARMELEE,

vious to light, Water and air, and thereby H. M. CORWIN. 

